Re: millisecond time format

[Ethan M. <merritt@u.washington.edu>]

On Friday 22 February 2008 04:35, pl...@pi... wrote:
> 
> I have some time data I can't see how to format to get it read in  
> correctly. The seconds being decimal notation.

This is a very long-standing request.  See tracker items
   536517    Higher resolution in timeseries plot
  1078852    Flexible usage of geographic coordinates

I think a patchset to address this would be very welcome.
Or, if not an actual patch, at least a fully worked-out
proposal for how such data would be handled both for 
input, for output, and for internal representation.

Currently the internal representation of time is an integer number
of seconds. Would one add a parallel float for the fractional seconds?
Stick with an integer but multiply by 1000 to keep only millisecond
precision?  Something else? 

What are the conflicts between the requirements of
degrees/minutes/seconds for spherical coordinate representation
and hours/minutes/seconds for time representation?

> # time	ch1	ch7	
> 
> 14:33:02.250 0.615 0.635
> 14:33:02.450 0.615 0.640
> 14:33:02.650 0.615 0.635
> 
> the nearest I have got is this which obviously does not account for the  
> decimal part.
> 
> set xdata time
> set timefmt "%H:%M:%S"
> set format x "%02H:%02M:%02S"
> 
> plot "adc.data" using 1:2
> 
> 
> Is there a way to read this data with gnuplot or will I need to work  
> another way?
> 
> TIA, Peter.

-- 
Ethan A Merritt            Courier Deliveries: 1959 NE Pacific
Dept of Biochemistry
Health Sciences Building
University of Washington - Seattle WA 98195-7742